Shadowloid

Shadowloid is a group of black-themed Vocaloids.

Design
They are black-themed Vocaloids.

Personality
Most Fanloids are negative versions of Vocaloids

Shadowloids
Zatsune Miku, a dark Miku.

Zeito, a dark Kaito.

Haine Lin and Ren, a dark Rin and a dark Len.

Zemuri Ruka, a dark Luka.

Zaiko, a dark Meiko.

Zumai Gackt, a dark Gakupo.

Gumika, a dark Gumi.

Kazane Tei, a dark Teto.

Lillia, a dark Lily.

ZeeU, a dark SeeU.

Diva, a dark Prima.

Zeiko, a dark Kaiko.

Zatsune Mikuo, a dark Mikuo.

Trivia

 * Kasari Baretu made up the characters Ruka, Zaiko, Gackt, Gumika, and Tei. But you can certainly make your own pages for them, as long as you credit her (but don't put them in the Characters by Kasari Baretu category and/or mix them in with the Sekai no Kasumi!)